People who are seeking exit-entry services at application centers are advised to possess negative PCR test results from within the past 48 hours, according to Shanghai police.They will also be required to wear a face mask, show their health code and travel code and have their temperatures taken, police said on Monday.However, they suggest that people in need of such services delay their trips to the application centers until later if it's not urgent, considering the ongoing COVID-19 pandemic situation in the city.